In addition to pale ales, Stone Brewing Co. sells mustards and sauces made with beer. Last week, in a blog post titled “MustardGate 2010,” the company announced that it recently discovered its mustards were beerless. (Or as they describe it, those mustards are “instant beer mustards–just add beer!”) The real mystery is what happened to the beer; the brewer says the kegs sent out to the mustard company were sent back empty.